J-Si is super competitive.

When J-Si learns about a world record that he thinks he can achieve and conquer, he sets his mind out to do it. Much like he did when he walked on a bed of Lego bricks bare foot for 168.5 feet long. He did it, set a record, but that record wasn't held for long, someone else did it longer.

Now he thinks he held another record, the most push ups in 30 seconds. With a total of 49 in 30 seconds, J-Si believes he held the record until Adam comes along and destroys J-Si.